--- Prime#each
      ǿˤĤƷ֤
      ((*̵¥롼*))ˤʤΤɬbreak뤳ȡ
        :
        > pp=Prime.new; i = 0; pp.each  {|x| break if i > 5; puts x; i+=1;}
        2
        3
        5
        7
        11
        13

